Interrupted

I was awoken from my flashback by the sound of the bathroom door swinging open. Most days when it was just me and my sister I didn't even bother to close the door nevermind lock it. Speaking of my sister.

I turned to the door and watch as my sister walked in totally naked and she wasn't alone. I saw that our neighbor Sam walked in behind her, also naked and fully erect. Sam was Becky's brother and we had a pretty interesting relationship too just like me and his sister. In fact he had a pretty interesting relationship with my sister too.

"C'mon sis" Lucy said as she opened the shower "you've been in there for ages…oh" she look down and I realised I hadn't taken my hand out from between my legs "well that explains why you were taking so long"

I tried to slip past her as she got into the shower but as we both tried to squeeze through thr cubical door I felt her tits brush against my back and then her hands deliberately grab my ass cheeks.

"Sorry ash" she said "its a tight fit"

I gasped as I felt one of her hands trail between my legs and then felt one of her fingers probe inside me.